I have no CEL with headers....

[JANNETTYRACING]

Originally Posted by 5genJordan

From my understanding and what I've been told is that rear o2's don't change anything with air and fuel ratio. That they are there just to make sure your cats are in place for emissions test. I had 2" long tubes with catless connectors installed on my 13 ls3 and never got a code until I had an issue with my motor that wasn't related to the headers. Obviously you don't get the maximum performance with out a tune but it did well.

You are correct but codes are set by the front O2s in many cases due to being moved further from the engine.

[Dexman1349]

What is the reason the front O2 sensors send a code? Is it because the exhaust is colder than what it should be since they're further from the engine

[/noob]

[honor first]

Originally Posted by JANNETTYRACING

That is the beauty of my Tune program once your on it and you buy your parts from me the tuning is FREE.


Ted.

digame mas. PM me or post here some info on this

[JANNETTYRACING]

Originally Posted by Dexman1349

What is the reason the front O2 sensors send a code? Is it because the exhaust is colder than what it should be since they're further from the engine

[/noob]

Yes Multiple reasons.

The computer keeps track of What we Call Transport Delay.

The time from when the injector fires to when the O2 sees the change.

Cold sensors do not respond as fast as hot sensors.

Ted.

[JANNETTYRACING]

Originally Posted by honor first

digame mas. PM me or post here some info on this

Yes Sir, Thank you.

Purchase an SCT tuner from JRE and you recieve your first JRE Custom Tune FREE to cover All Stock car or Stock car with any CAI and any CAT Back exhaust.

Options apply if other mods are already installed.

This Gets you on the JRE Custom Tune Program.

Say down the road you purchase Headers from JRE Tune update is FREE,

Same For Any other Mods, Cams, gears, torque converters, blowers, fuel pumps, etc etc etc.

Ted.